George, Charlotte and Louis use the last name Cambridge. Picture: Dominic LipinskiSource:Getty Images

Prince Harry used the last name Wales while in the army. Picture: John StillwellSource:AFP

Prince Harry and Prince William were enrolled in school and the armed forces with the last name Wales because Charles is the Prince of Wales, while Prince George uses the surname Cambridge as his father is the Duke of Cambridge.

So it’s expected any future offspring of Harry and Meghan will use the name Sussex because of the couple’s title.